function BirdMove(list){
    base(this,LSprite,[]);//此类继承Sprite
    var self=this;

    self.bird=new Bird();
    self.addChild(self.bird);

}

BirdMove.prototype.myMove=function(){
    var self=this;
    self.bird.rotate=-20;
    self.bird.scaleX=self.bird.scaleY=1.5;
    self.bird.alpha=1;
    self.bird.x=-20;
    self.bird.y=400;

    self.tween=LTweenLite.to(self.bird,2,{scaleX:1,scaleY:1,x:300,y:300})
        .to(self.bird,1.5,{scaleX:0.7,scaleY:0.7,x:400,y:250})
        .to(self.bird,1,{scaleX:0.2,scaleY:0.2,x:500,y:150,alpha:0,onComplete:function(){
            setTimeout(function(){
                self.myMove();
            },500);
        }});
}

BirdMove.prototype.myKill=function(){
    var self=this;
    self.bird.alpha=0;
    if(self.tween)self.tween.pause();
}